I just want to know if the walbro 400 pumps fit in the old Fore hat that was made for the older walbro pumps that were out at the time the original fore hats were made.
Well from what I've read the walbro 400 are a little bigger than the 255 an have to be slightly modified. But I'm not sure exactly what has to be done. So it would be awsome if you did a write up with pics .